YouTube Embed Overlay

Instantly open YouTube links in an embedded iframe overlay player

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name         YouTube Embed Overlay
// @namespace    WW91VHViZSBFbWJlZCBPdmVybGF5
// @version      1.2
// @description  Instantly open YouTube links in an embedded iframe overlay player
// @author       smed79
// @license      GPLv3
// @icon         https://i25.servimg.com/u/f25/11/94/21/24/ytl2eo11.png
// @match        https://*/*
// @exclude      https://*.youtube.com/*
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    // Regex to detect YouTube video IDs in links
    const ytRegex = /(?:https?:\/\/)?(?:m|www\.)?(?:youtube\.com\/watch\?v=|youtube\.com\/embed\/|youtu\.be\/(?:watch\?v=)?|youtube-nocookie\.com\/embed\/|youtube\.com\/shorts\/)([a-zA-Z0-9_-]{11})/;

    // Disable autoplay in site embeds
    function disableAutoplayInEmbeds() {
        document.querySelectorAll('iframe[src*="youtube.com/embed"]').forEach(iframe => {
            iframe.src = iframe.src.replace(/(\?|&)autoplay=1/, '');
        });
    }
    disableAutoplayInEmbeds();
    new MutationObserver(disableAutoplayInEmbeds).observe(document.body, { childList: true, subtree: true });

    // Suppress site popups if they try to open YouTube videos
    document.addEventListener('click', e => {
        const trigger = e.target.closest('.mfp-link, .fancybox, [data-fancybox]');
        if (trigger) {
            const href = trigger.getAttribute('href') || trigger.dataset.src || '';
            if (ytRegex.test(href)) {
                e.preventDefault();
                e.stopImmediatePropagation();
                e.stopPropagation();

                console.log('YouTube popup suppressed, userscript overlay will show instead');
                const match = href.match(ytRegex);
                if (match) createOverlay(match[1]);
            }
        }
    }, true); // capture phase ensures this runs before site handlers

    // Create overlay with YouTube iframe
    function createOverlay(videoId) {
        const overlay = document.createElement('div');
        overlay.id = 'yt-embed-overlay';
        overlay.style.position = 'fixed';
        overlay.style.top = '0';
        overlay.style.left = '0';
        overlay.style.width = '100vw';
        overlay.style.height = '100vh';
        overlay.style.backdropFilter = 'blur(8px)';
        overlay.style.backgroundColor = 'rgba(0, 0, 0, 0.3)';
        overlay.style.zIndex = '9999';
        overlay.style.display = 'flex';
        overlay.style.justifyContent = 'center';
        overlay.style.alignItems = 'center';
        overlay.style.flexDirection = 'column';
        overlay.style.cursor = 'pointer';

        // YouTube iframe with autoplay enabled
        const iframe = document.createElement('iframe');
        iframe.src = `https://www.youtube-nocookie.com/embed/${videoId}?autoplay=1&mute=0&cc_load_policy=0&cc_lang_pref=en&hl=en-us&iv_load_policy=3&rel=0&enablejsapi=1`;
        iframe.style.width = '98vw';
        iframe.style.height = `${(98 / 16) * 9}vw`;
        iframe.style.border = '1px solid #f00';
        iframe.allow = 'autoplay; encrypted-media';
        iframe.allowFullscreen = true;
        iframe.onclick = (e) => e.stopPropagation();

        // Close button with inline SVG icon
        const closeBtn = document.createElement('button');
        closeBtn.style.position = 'absolute';
        closeBtn.style.top = '12px';
        closeBtn.style.right = '12px';
        closeBtn.style.background = 'rgba(0, 0, 0, 0.5)';
        closeBtn.style.border = 'none';
        closeBtn.style.cursor = 'pointer';
        closeBtn.style.width = '2.6rem';
        closeBtn.style.height = '2.6rem';
        closeBtn.style.borderRadius = '50%';
        closeBtn.style.padding = '0';
        closeBtn.style.display = 'flex';
        closeBtn.style.justifyContent = 'center';
        closeBtn.style.alignItems = 'center';
        closeBtn.style.transition = 'all 0.3s ease';

        closeBtn.innerHTML = `
          <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="#ffc" stroke-width="4" stroke-linecap="round" stroke-linejoin="round">
            <line x1="18" y1="6" x2="6" y2="18"></line>
            <line x1="6" y1="6" x2="18" y2="18"></line>
          </svg>
        `;

        // Hover effects
        closeBtn.addEventListener('mouseenter', () => {
            closeBtn.style.border = '1px solid #f00';
            closeBtn.style.background = 'rgba(0, 0, 0, 0.8)';
            closeBtn.style.transform = 'scale(1.2)';
        });
        closeBtn.addEventListener('mouseleave', () => {
            closeBtn.style.background = 'rgba(0, 0, 0, 0.5)';
            closeBtn.style.transform = 'scale(1)';
        });
        closeBtn.onclick = (e) => {
            e.stopPropagation();
            overlay.remove();
        };

        // Close overlay when clicking outside iframe
        overlay.onclick = (e) => {
            if (e.target === overlay) overlay.remove();
        };

        // Close overlay with Escape key
        document.addEventListener('keydown', function escHandler(e) {
            if (e.key === 'Escape') {
                const el = document.getElementById('yt-embed-overlay');
                if (el) el.remove();
            }
        });

        overlay.appendChild(iframe);
        overlay.appendChild(closeBtn);
        document.body.appendChild(overlay);
    }

    // Attach listeners to YouTube links
    function attachListeners() {
        document.querySelectorAll('a[href]').forEach(link => {
            if (link.dataset.ytEmbedBound) return;
            const match = link.href.match(ytRegex);
            if (match) {
                link.addEventListener('click', function (e) {
                    e.preventDefault();
                    e.stopImmediatePropagation();
                    e.stopPropagation();
                    createOverlay(match[1]);
                });
                link.dataset.ytEmbedBound = 'true';
            }
        });
    }

    attachListeners();
    const observer = new MutationObserver(attachListeners);
    observer.observe(document.body, { childList: true, subtree: true });
})();